Title :
Computer based harmonic simulation and testing for transformer differential relay
Author :
Rob, Rafat Abu ; Jewell, Ward T.
Author_Institution :
Dept. of Electr. Eng., Wichita State Univ., KS, USA
Abstract :
The effect of harmonics on the operation of a transformer differential relay is addressed. The testing facility consists of a computer-based three-phase harmonic source, programmable three-phase voltage and current amplifiers, and a digital-to-analog interface board. The software generates the harmonics and detects any trip action by the relay. Extensive experiments are performed in which the relays are subject to a matrix of distortion frequencies, magnitudes, and phases. The results of these experiments are discussed, and suggestions on the application of the relay are given
Keywords :
automatic test equipment; automatic testing; digital simulation; electric distortion; harmonics; relay protection; relays; THD; computer-based three-phase harmonic source; current amplifiers; digital-to-analog interface board; distortion frequencies; harmonic simulation; programmable three-phase; testing facility; transformer differential relay; trip action detection; voltage amplifiers; Circuit faults; Computational modeling; Computer simulation; Digital relays; Harmonic distortion; Power system relaying; Protection; Protective relaying; System testing; Voltage;
Conference_Titel :
Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0510-8
DOI :
10.1109/MWSCAS.1992.271323
